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Troubleshooting
5
5.2.4.SYSTEM CONTROLLER
Since the system controller performs real time gravity
computations/corrections, records data, and initiates the dropping sequence, a
failure of this component results in a catastrophic system failure. Table 5-4 gives
a list of problems and possible solutions for the system controller. The primary
source of all problems encountered with the controller units have been with poor
cable connections or poor internal connections of the cards to the computer.
Problem
Solution
“g” responds with “Time Out: Check
Trigger, Fringe Amplitude, TTL
Cable” message.
General message indicating no
fringe data arrived at the
computer. Check for alcohol pool
in the I.B., beam blocker pushed in,
TTL cable to computer, TRIG cable
from dropper controller to
computer. Check that the fringe
amplitude is >250 mV. Check that
the dropper is functioning in the
DROP mode.
Gravity value is wrong
Check all gravity corrections
especially vertical transfer to the
specified height. Check
latitude/longitude and date/time.
Check laser peak lock
hardware/software
Table 5-4
System Controller Problems and Solutions
5-10
Содержание Micro-g LaCoste FG5
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Страница 13: ...Design Components and Function 2 Figure 2 3 Side view of the dropping chamber 2 3 ...
Страница 21: ...Design Components and Function 2 Figure 2 8 Side view of interferometer optics and beam path 2 11 ...
Страница 23: ...Design Components and Function 2 Figure 2 9 The Superspring 2 13 ...
Страница 31: ...Design Components and Function 2 Figure 2 12 Rotation Monitor 2 21 ...
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Страница 36: ...How to Set Up and Run the FG5 3 Figure 3 1 Superspring Interferometer Setup 3 4 ...
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Страница 138: ...Checklists and Logs Appendix D Measure gap between two levers near ZPM 9 24 ...
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